Well, let's analyze each of your questions in turn.
> Since I came to the US there is this constant push for impeaching the sitting president
When did you come to the USA?
There was a constant push to impeach Obama. There was a constant push to impeach Bush. The was a constant push to impeach Clinton.
Clinton was elected in 1993, so there are a lot of adult Americans who were born in the USA and who can also say that "since I came to the US (aka was born), there has been this constant push for impeaching the sitting president".
> extreme gerrymandering
https://en.wikipedia.org/wiki/Gerrymandering#Etymology
> and all the other nonsense
Congress seems to be more dysfunctional now than it was in the 80's and 90's. But there have been worse eras, too. At least the congressmen who've been shot lately weren't shot by other congressmen in duels, for example... :-\